Join Audio
Stitch tracks together into one file, in the order you added them.
- Add
- Adjust
- Make
- Keep
How to use this tool
- Add your files — drag them onto the page or choose them. They stay on your device.
- Add the tracks in playing order — the list can be reordered by dragging.
- Pick the output format and bitrate; mixed source formats are re-encoded to match, and the tool says when that happened.
- Press “Join audio” and download the results, individually or as one ZIP.
About this tool
Stitch tracks together into one file, in the order you added them. Free and unlimited, and nothing is uploaded: it all runs in your own browser. Everything is analysed and produced on your own device — nothing is uploaded anywhere, and you can verify it: the tools keep working even offline.
Privacy & limitations
Multi-hundred-megabyte recordings can exhaust the browser's memory — everything runs on your machine, so your machine is the limit. Sample rates and channel counts that differ across tracks force a re-encode of the whole join even between identical formats.
Last updated:
Frequently asked questions
Will the joins be audible?
There is no crossfade, so tracks meet exactly where one ends and the next begins. If a file ends mid-note or starts with a click you will hear it; adding a short fade to the parts first is the usual fix.
Does it re-encode?
Not when the files already match in format, sample rate and channel count, in which case it is a copy and nothing is lost. Mixed inputs are resampled to a common rate first, which does re-encode.
Can I join files of different formats?
Yes. Pick the output format you want and anything that can be decoded will be joined into it, though that route always re-encodes.